Anyone that works on auto AC should be able to handle it. Same components, same functions only location may vary a little.
Or, start the gen set and run the roof air.
2006 Gulfstream Friendship G7, Cat C7 and Allison 6 spd
Honda VTX and Cruiser Lift on the back
Blue Ox Aladdin, Brake Buddy, 2019 Chevy Blazer RS toad